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Finding the Fourth Proportional to 603,957.60, 903,603.60 and 394,005.60

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Solution

The fourth proportional to 603,957.60, 903,603.60 and 394,005.60 is: 589,486.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,957.60 : 903,603.60 = 394,005.60 : x
  2. Step 2: Convert to fraction form
    603,957.60/903,603.60 = 394,005.60/x
  3. Step 3: Cross multiply
    603,957.60x = 903,603.60 × 394,005.60
  4. Step 4: Simplify right side
    603,957.60x = 356,024,878,580.16
  5. Step 5: Solve for x
    x = 356,024,878,580.16/603,957.60
  6. Step 6: Final answer
    x = 589,486.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.